The easiest way to do it if you only have a few of them is to select all the tracks you want to fatten using Ctrl-Shift in turn on each track. When you have the whole of each track selected click the right mouse button, select Properties, and change the Segments Style to the new width.
0.2 mm track width is rather narrow for that sort of board, I’d change them all.
You ought to ask this sort of question on the Pulsonix forum: